Count of genus zero JJ-holomorphic curves in dimensions four and six
نویسندگان
چکیده
In this note, genus zero Gromov-Witten invariants are reviewed and then applied in some examples of dimension four six. It is also proved that the use class embedded $J$-holomorphic curves to distinguish deformation types symplectic structures on a smooth $6$-manifold restricted sense they can not $X_1\times S^2$ $X_2\times for two minimal, simply connected, $4$-manifolds $X_1$ $X_2$ with $b_2^+(X_1)>1$ $b_2^+(X_2)>1$.
منابع مشابه
Albert Algebras over Curves of Genus Zero and One
Albert algebras and other Jordan algebras are constructed over curves of genus zero and one, using a generalization of the Tits process and the first Tits construction due to Achhammer.
متن کاملSuperconformal Symmetry in Six-dimensions and Its Reduction to Four
Superconformal symmetry in six-dimensions is analyzed in terms of coordinate transformations on superspace. A superconformal Killing equation is derived and its solutions are identified in terms of supertranslations, dilations, Lorentz transformations, R-symmetry transformations and special superconformal transformations. The full superconformal symmetry, which is shown to form the group OSp(2,...
متن کاملUniformizing Tropical Curves I: Genus Zero and One
In tropical geometry, given a curve in a toric variety, one defines a corresponding graph embedded in Euclidean space. We study the problem of reversing this process for curves of genus zero and one. Our methods focus on describing curves by parameterizations, not by their defining equations; we give parameterizations by rational functions in the genus zero case and by non-archimedean elliptic ...
متن کاملQuantum Cohomology of Moduli Spaces of Genus Zero Stable Curves
We investigate the (small) quantum cohomology ring of the moduli spaces M0,n of stable n-pointed curves of genus 0. In particular, we determine an explicit presentation in the case n = 5 and we outline a computational approach to the case n = 6.
متن کاملPOINTLESS CURVES OF GENUS THREE AND FOUR by
— A curve over a field k is pointless if it has no k-rational points. We show that there exist pointless genus-3 hyperelliptic curves over a finite field Fq if and only if q 6 25, that there exist pointless smooth plane quartics over Fq if and only if either q 6 23 or q = 29 or q = 32, and that there exist pointless genus-4 curves over Fq if and only if q 6 49. Résumé (Courbes de genre 3 et4 sa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Turkish Journal of Mathematics
سال: 2021
ISSN: ['1303-6149', '1300-0098']
DOI: https://doi.org/10.3906/mat-2007-72